package javas.net;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class TestSocketServer {
    private static final int PORT=10000;
    private ServerSocket serverSocket;
    private ExecutorService executorService;//�̳߳�
    private static final int POOL_SIZE=10;//����CPU�̳߳ش�С
  
    public TestSocketServer() throws IOException{
        serverSocket=new ServerSocket(PORT);
        executorService=Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors()*POOL_SIZE);
        System.out.println("����������");
    }    
    
	public static void main(String[] args) throws IOException {
		new TestSocketServer().service();
	}
	
    public void service(){
        while(true){
            Socket socket=null;
            try {
                //���տͻ�����,ֻҪ�ͻ�����������,�ͻᴥ��accept();�Ӷ�������
                socket=serverSocket.accept();
                executorService.execute(new Handler(socket));
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
    
    private class Handler implements Runnable{
        private Socket socket;
        public Handler(Socket socket){
            this.socket=socket;
        }
        private PrintWriter getWriter(Socket socket) throws IOException{
            OutputStream socketOut=socket.getOutputStream();
            return new PrintWriter(socketOut,true);
        }
        private BufferedReader getReader(Socket socket) throws IOException{
            InputStream socketIn=socket.getInputStream();
            return new BufferedReader(new InputStreamReader(socketIn));
        }
        public String echo(String msg){
            return "echo:"+msg;
        }
        public void run(){
            try {
                System.out.println("New connection accepted "+socket.getInetAddress()+":"+socket.getPort());
                BufferedReader br=getReader(socket);
                PrintWriter pw=getWriter(socket);
                String msg=null;
                while((msg=br.readLine())!=null){
                    System.out.println(msg);
                    pw.println(echo(msg));
                    if(msg.equals("bye"))
                        break;
                }
            } catch (IOException e) {
                e.printStackTrace();
            }finally{
                try {
                    if(socket!=null)
                        socket.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }   

}


